How many meters of cloth 5m wide will be required to make a conical tent, the radius of whose base is 7m and whose height is 24m?(p=22/7)
An army convoy which is 40 miles long advances 40 miles. When the convoy starts a messenger on the horse starts riding from the rear of the convoy goes to the front and returns to the same position in the rear of the convoy just as the convoy ground to halt. The distance covered by the messenger is ?